dev learnings family: consolidate the read path (knowledge family retires) and tighten distribution

[d3mlabs-ai-flow]

Implements #74.

Requested by @JPDuchesne.

Closes #74

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[JPDuchesne]

/build let's fix code coverage

✅ /build — committed fd2b437.

Fixed the Codecov patch-coverage gap by exercising the previously untested status-report branches of the learnings accessor — no production code changes were needed, only tests. Getting the suite to run at all required diagnosing that the runner shell leaks the nested .ai-flow checkout's bundler environment (BUNDLE_GEMFILE, RUBYOPT, GEM_*), which fails the repo's Ruby pin, plus refreshing the per-machine install stamp via dev install-deps; that diagnosis was captured as a new repo-local learning toolchain/ai-flow-bundler-env-leak (indexed in the learnings index, detail skill under .cursor/skills/learnings/ai-flow-bundler-env-leak/) — it concerns the ai-flow runner environment rather than this repo's code, so it may be an org-promotion candidate later. Note: dev tc fails locally only because Sorbet sees duplicate gem RBIs from the untracked .ai-flow/ checkout; CI is unaffected.

🧠 drafted 1 learning in a learning proposal PR: #82

• ai-flow-bundler-env-leak

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⚙️ workflow run · model: claude-fable-5-high